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沥青路面的应用越来越广泛,道路基层也大部分采用半刚性基层,而基层开裂问题一直都是影响道路使用寿命的关键之所在。文章一方面从理论角度来分析和了解道路各结构层产生裂缝原因、影响因素和评价方法,另一方面从实验角度来分析和研究结构层抗裂性能,并提出的基于劈裂模量的收缩应变能抗裂性评价指标体系,从能量的观点把应力和应变结合起来能有效地评价半刚性基层材料抗裂性。
Asphalt pavement is more and more widely used, most of the grassroots grassroots level also use semi-rigid grassroots, and grassroots cracking has always been the key to affecting the service life of the road. On the one hand, the article analyzes and comprehends the causes, influential factors and evaluation methods of cracks in each structural layer of road from the theoretical perspective. On the other hand, analyzes and studies the crack resistance of structural layer from the experimental point of view and proposes the shrinkage based on splitting modulus Strain energy crack resistance evaluation index system, from the energy point of view of the combination of stress and strain can effectively evaluate the semi-rigid base material crack resistance.